JPS62278305A - Two-phase fluid oscillating element - Google Patents

Abstract

PURPOSE:To simplify construction of a flow path and to promote stabilized action or the like, by providing a jet stream injecting supply nozzle, inducing chamber having an opening communicating with the atmosphere and a side wall so that deflecting oscillation of a jet stream is performed with out providing a feedback flow path. CONSTITUTION:Inflow fluid to a supply flow path 6 is injected from a supply nozzle 7, and this jet stream Fil becomes a high speed flow in an inducing chamber 8, causing it to generate a pressure not more than the atmospheric pressure. As a result, air, which passes through a gas introducing port 9, is induced into the inducing chamber 8, and gas vortexes VL1, VR1 are formed in both sides of the jet stream Fil. Here the jet stream Fil, if its upper side gas vortex VL1 low decreases the pressure, is previously deflected to an upper side being jetted from a jet port as a stream FO1. Next, on part of a gas vortex VL2, formed by a jet stream Fi2, is allowed to flow out from the inducing chamber 8 as a bubble B, and its inflow to a part of low pressure vortex AL2 destructs a low pressure condition between the jet stream Fi2 and a side wall 11. As a result, the jet stream Fi2, which straight advances as a jet stream FO2, is jetted from the jet port.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Application Field The present invention relates to a fluid oscillation element used in a spray nozzle of a washing device or a water spray device that washes tableware or the human body by spraying washing water. It is related to.

FIG. 6 shows a conventional oscillation element of Juan's Bojutsu. This element is the supply channel 1
5. Supply nozzle 16, jet adhesion walls 17 and 18 on both downstream sides of the supply nozzle 16, supply nozzle 16 and jet adhesion walls 17
．． Control ports 19 and 20 are provided between each of the control ports 19 and 18, and each of the control ports 19 and 20 has a feedback port 21 and a feedback flow path 23 provided in the jet adhesion wall 17 and 18.
．． The configuration is such that they are communicated via 24.

In the above configuration, the fluid flowing in from the supply channel 15 is ejected from the supply nozzle/L'16. This jet adheres to one jet adhesion wall due to the Coanda effect. First, the jet adhesion wall 17
Assume that it is attached to The attached jet is attached to the jet adhesion wall 17
It spews out from the outlet 25 along. At this time, part of the jet enters the feedback port 21 and enters the feedback channel 23.
and returns to the control port 19. The flow that returned to the control port 19 is
The main jet flow from the supply nozzle/v16 is switched from the adhesion wall 17 to the adhesion wall 18 side. Thereafter, the jet repeats the above operation.

As a result, the main jet from the supply nozzle /L/16
Since the oscillating jet signal transmission flow path is provided in which 7.18 is attached and ejected alternately, this flow path may become blocked and malfunction may occur, and the oscillation may be affected by the feedback port and feedback flow path conditions. As a result, the design tolerance for stable oscillation is extremely narrow, making it difficult to manufacture stable devices. It consists of a nozzle, an induction chamber with an opening communicating with the atmosphere, and a side wall, and is intended to deflect and oscillate the jet stream.

The low pressure generated when the jet stream ejected from the supply nozzle of the working element passes through the induction chamber attracts air from the atmosphere, and the action of the air flowing into the induction chamber generates a pressure difference between the left and right induction chambers. The jet stream is pre-directed, and the jet stream is further deflected by the wall effect of the adhesion wall to cause the jet stream to be injected from the injection port.

This jet flow is alternately deflected by the randomly varying pressure difference between the left and right sides of the induction chamber caused by the air drawn into the induction chamber, and oscillating injection is performed.

EXAMPLE Hereinafter, an example of the two-phase fluid oscillation device of the present invention will be described based on FIGS. 1 to 5.

In FIG. 1, a two-phase fluid oscillation element 1 has a laminated structure of an element base 2, an upper plate 3, and a packing 4, and a supply flow path pipe 5 is attached to the element base 2.

FIG. 2 shows a flow path pattern formed on the element substrate 2,
6 is a supply channel, 7 is a supply nozzle, 8 is a supply nozzle/L/7
11.12 is an induction chamber having a gas inlet 9 communicating with the outside and having a downstream end shaped like a constriction part 10;
The side walls 13 provided on both downstream sides of the side walls 11 and 12 are jet ports formed at the downstream opening ends of the side walls 11 and 12. Also, the side wall 11.
12 is disposed with a set pack amount 14 relative to the constriction portion 10 to facilitate generation of a low pressure vortex between the side wall and the jet stream.

Figures 3, 4, and 5 show the manufacturing state of the element, F,
is a jet flow, Fo is a jet flow, VL and VR are gas cylinders induced from the gas inlet 9 and generated in the induction chamber 8, AL, A
R is due to the fluid entrainment action of the jet and the attached wall 11.1
A low-pressure vortex generated between 2 and B indicates gas flowing out from the induction chamber 8.

The operation based on the above configuration will be explained.

The liquid that has flowed into the supply channel 6 is injected from the supply nozzle /L/7. Since this jet stream becomes a high-speed flow in the induction chamber 8, the pressure in the induction chamber 8 becomes lower than atmospheric pressure. That is, since the pressure becomes negative with respect to the atmosphere, air is induced into the induction chamber 8 through the gas inlet 9, forming gas cylinders vL1 and VL2 on both sides of the jet flow Fi1.

A pressure difference occurs between the gas cylinders vL1 and VR1 due to the nature of fluid turbulence. If the upper gas cylinder VLI is the lower gas cylinder V
When it is lower than R1, the jet flow F11 is pre-directed upward.

The pre-directed jet flow Fi1 passes through the constriction section 10 and the jet flow F4
A low-pressure vortex AL1 is generated due to the wall effect between 1 and the side wall 11, and it adheres to or almost adheres to the side wall 11, is deflected by the upper side, and is ejected from the ejection port 13 as F, 1 (as shown in Fig. 3). ). Next, a part of the gas cylinder VL2 formed by the jet flow Fi2 flows out of the induction chamber 8 together with the jet flow F2 as bubbles B, flows into the low pressure vortex Al1 part, and flows between the jet flow Fi2 and the side wall 11. Destroy low pressure conditions. As a result, the jet flow Fi2 separates from the adhesion wall 11,
The jet stream F02 moves straight and is jetted out from the spout 13 (the state shown in FIG. 4 is thus reached). Next, due to the inertia and jet instability that occur during jet adhesion and separation, the jet flow Fi3
adheres to the opposite side wall 12 and generates a low-pressure vortex AR3, which adheres to or almost adheres to the side wall 12, is deflected by the lower side, and is ejected from the jet nozzle 13 as F03 (the above state shown in Fig. 5). ).

Thereafter, the adhesion separation phenomenon described on the side wall 11 side occurs on the adhesion wall 12 side, and the jet flow becomes an oscillating flow that adheres alternately between the side walls 11 and 12.

Effects of the Invention (1) As described above, since the flow path configuration does not have a signal path such as a feedback flow path, the flow path becomes simple.

Therefore, there is no trouble caused by clogging of the signal path, the operation is stable, and the device manufacturing is facilitated.

■ Due to the action of the air induced by the jet flow, it oscillates, promotes the discontinuation of the flow, and grows into particles. As a result, the collision force of the jet stream increases and the cleaning effect improves.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a two-phase fluid oscillation device showing an embodiment of the present invention, FIG. 2 is a flow path pattern diagram of the same two-phase fluid oscillation device,
FIG. 3, FIG. 4, and FIG. 5 are operating state diagrams showing the operation of the two-phase fluid oscillation device, and FIG. 6 is a flow path pattern diagram of a conventional oscillation device. 6... Supply channel, 7... Supply nozzle,
8... Attraction chamber, 9... Gas inlet, 1
o...Aperture part, 11.12...Side wall,
1a... Jet outlet, 14... Setback amount. Name of agent: Patent attorney Toshio Nakao and 1 other person3.
-11 anti-4・-HA0tsu 9・-Gas inlet Fig. 2 Fig. 3 VF/ Fig. 4'/R2 Fig. 5 Fig. 6

Claims (2)

[Claims] (1) A supply channel, a supply nozzle, an induction chamber located downstream of the supply nozzle and having a gas inlet communicating with the outside, with a downstream end shaped like a constriction, and a downstream opening end on both sides downstream of the constriction as a spout. a two-phase fluid oscillation element, which is configured with a side wall that is configured to have a liquid flowing in from the supply flow path and ejects the liquid flowing into the control chamber in oscillation due to the action of the gas flowing into the control chamber. (2) Two-phase fluid oscillation according to claim 1, wherein the attached wall has a setback amount with respect to the constriction portion that promotes the formation of a low pressure region or a low pressure vortex region between the jet flow and the wall. element.